Strainer for sugar juices and the like



March 1 7- s s. PECK STRAINER FOR SUGAR JUICES AND THE LIKE Filed Aug/i2'7 1923 I m n'venl-ar' H 5. '5; PEG/r litatto'cneq Patented Mar. 1,1927.

UNITED'STATES SAMUEL S. PECK, OF HONOLULU, TERRITORY OF HAWAII.

STRAINER FOR SUGAR J'UICES AND THE LIKE.

' Application filed August 27, 1923, Serial No. 659,684, and in GreatBritain January 13, 1923.

This invention relates to strainers for sugar juices and the like; andit comprises scribed and claimed certain improvements in strainers forsugar juices and the like, in which there is provided a revolubleforaminous drum, a tank or the like for the drum, screen paddlesarranged to carry the solid matters from the bottom of the tank,scraping devices to scrape the solid matter off the paddles andmeans-for withdrawing the juices from the drum. In said priorapplication, the means described comprised generally pipes or the likeextending towards the bottom of the tank but inside the revolublescreen, with connections for withdrawing the liquid from the tank. Thepresent invention comprises certain improvements inthe straining device,and particu larly, the means for withdrawingthe liquid from tank.

In the accompanying drawings showing one form of a specific embodimentof my invention- I J Fig. 1 is an end view of the apparatus;

Fig. 2 is a side view partly in section; and

Fig. 3 is a detailed perspective ofone form of strainer paddle which maybe used.

Referring to the drawings 1 indicates a tank of sheet iron or steelhaving end walls 2 which carry bearings 3 .for the shaft 4. The shaftsupports the screen drum or cylinder 5 through the hub 6 on the left andthe side wall screening 7 carrying the angle irons 8 to which areattached irons carrying sections of screening forming the drum 5. At theright the shaft carries the spoke hub or wheel 9 by means of the key 10and this hub is flanged as at 11 and carries the side wall 12 ofscreening material. The angle iron 8 serves to connect the side walls 12with the irons of screen sections forming the drum 5. Preferably at oneside,'but if desired at both sides, the screen drum may be provided withthe hub and a partition plate forming the dam to be described. For sakeof simplicity of illustration this partition plate forming the dam isshown at one end of the apparatus. The bottom 'of the tank is providedby means of rivets and the like with a partition plate 13 extendingupwardly in the tank to the outer face of the hub and being curved atthe top to fit against the outer face of the hub 9 and in elfect form aseat therefor. This partition plate is provided with a channel 14 formedby means of a section of angle iron carrying packing which engages theouter face of the wheel 9. This construction described results in theformation of a passage 15 one side of which is formed by the end wall 2of the tank and the other side of which is formed by the partition plate13. The bottom of this passage is provided with an offtake pipe 16 toconduct strained juices to evaporators or other points in the plant forfurther operation. The tank is provided at the top with a trough 17having inlet 18 for juice from the mill witha partition 1.8 dividing thetrough into two sections and acting as a wall to prevent forciblefeeding of the juices to the drum. The trough 17 is further providedwith the lipped overflow 19 directing the juices to the top of thescreen drum along its length. The screening of the drum may be formed bythe angle irons 20 carried by theangle irons 8 and such irons 20 areprovided at intervals with straining paddles 21 of wire gauzeor the likemounted in frames 22 and united to the angle irons 20 by means of thearms23. The tank is further provided with the frame work 24; carryingshaft 25 to which a number of scraper arms 26 are pivoted. These scraperarms carry scrapers 27 at their extremities and are arranged to contactwith the strainer paddles 21 so that when the drum revolves (throughmeans of a pulley and mechanism, not shown) in the direction of thearrowshown in Fig. 1', the solid material carried up by the paddles isscraped off of them by means of the scraper arms 26 and this solidmaterial is delivered into the chute 28. This construction justdescribed has the advantages pointed out in my copending application,Serial No. 590,966, filed September 27, 1922. The

screenof the revolving drum may be made' the only parts of the apparatuswhichcome incontact with scraping devices-and it isa simple matter-torenew them it they should be worn out, but since there are a plurality,

of these repeatedly, runningthroughthe liquid"accumulatingin the bottom01 the tank w hen coarserscreening than that of the drum is used thenecessityfor replacing these-straining paddles is infrequent.

Instead ofthe type of strainer paddles shown in detailinliig. 3 and indotted lines in FigL1, I may use pivoted paddles. The endsof the drumsmaycarry brackets 30 carryingshafts 31 to which are journaled aplurality of paddles 82. These paddles being free to swingwill assume avertical position when the'bottom-vof the tank and will occupy the spacebetween'the bot-tom oi" the drum and"the botton tank and thus forcesolid" matter into proximity to the scraping arms 26: The padclles32 maybe perforated.

ln operation thegsugar juices from the mill arepumped through juioeinlet18 to the tank 17. They overflow the dividing wall 18 'and flow from thetrough onto the top of the drum 'as the drum is revolved. Solid'matteris caught on the periphery of the drum carried down tothe bottom ofthetank andis caught by the paddles as the drum revolves, carried upinto proximity to the scraping arms 26 and scraped from these paddlesinto the chute 28. The paddle arms revolving with the-drumare constantlypicking up solid matter from the bottom of the tankandi delivering-it tothe chute 28. The juices which reach the inside of the drum can only doso by passing through the screening either at the periphery or at. theends. The only outlet is through the hubor pulley 9 since the partitionplate .13 in communication with this hub forms a dam over which thejuices must flow -to the passage 15 and thence toexit through 16. Withthis construction it is not necessary to provide suction pipes orsiphoningl arrangements forwit lntlrawingiv the strained-juices fromthe-tank. a

To prevent unstrained juice from over fiOWlIlg;,lll1t-3 dam-and thesidewalls of the tank, there is provided an overflow pipe A.Overflowing,unstrained juices may be ree turned for straining.

What I claim is:

1. Apparatus for straining sugar juices and the like comprising a tank,a foraminous drum mounted to revolve therein, a coaxial hub membermounted in one end of the drum, saidhub member comprising a centralportion and a spaced circular flange, the said flange being attachedalong one 1 edge to the facebt the dirum, paddles carried on theperiphery of the drum and arranged to remove solid matter from thetending from the bottom of the tank up- 7 wardly to form a dam, and aforaminous drum mounted to revolve lIl tlle tank and having one openend,'a hubdnembercomprising a central portion and a spacedcir-o cularflange mounted ,coaxlally with said drum, the face of said circularflangerevolving n contact with said dam to form a seal therewith, suchseal bemg eflective 11'- respective of longitudinal movement of saiddrum within said tank.

3. straining,apparatusfor sugar uices and the like comprisinga tank, afor-amt nous drum arranged to revolve therein, a hub carried by one endof the drum providmg a circular flangeand a partltron wall extendingfrom the bottom of the tank to the face of saidflange whereby the hubmay revolve with respect to the partition wall and move longitudinallyof said tank'without permitting solid matter to passbetween said flangeand walLand whereby the partition wall together with the hub forms a damover which, the juices may, flow;

4. straining apparatus for sugar juices and the like comprisingia tank,a :Edra minous drum arranged to revolve therein, a hub carried by oneend of the drum" comprising a circular flange, and a partition wallextending fromthe bottom of the tank to the face of said flange andcontacting therewith whereby the hub may revolve with respect to thepartition wall and move longitudinally of said tank without permitting.solid matter to pass between the flange and partition wall, andpacking-betweeiitlie partition Wall and the said hub.

5. A straining'appa-ratus for sugar juices and the like comprising atank, a: foramiprising'a circular flange, a partition plate extendingfrom the bottom of the tank to prevents passage of solid mattertherebethe said flange and in contact therewith, said tween irrespectlveof the longitudinal posipartition Wall being located between the endtion of said drum in the said tank. 10 Wall of the drum and the end wallof the In testimony whereof, I have hereunto aftank whereby there isformed a dam over fixed my signature.

which the juices may flow, and packing between said partition wall andflange Which SAMUEL S. PECK.

